Fig. 2From: Graphene oxide and indole-3-acetic acid cotreatment regulates the root growth of Brassica napus L. via multiple phytohormone pathwaysRoot length (a), root fresh weight (b), number of adventitious roots (c) and stem length (d) of B. napus seedlings on the 10th day after GO and IAA treatments. The values with different letters are significantly different; Student’s t-test, P < 0.05 (lowercase letters) or P < 0.01 (uppercaseletters)Back to article page